Post-processing trimming apparatus and image-forming apparatus
a technology of image-forming apparatus and post-processing trimming, which is applied in the direction of electrographic process apparatus, instruments, printing, etc., can solve the problems of inconvenient, increase in cost, and productivity decline, and achieve the effect of preventing productivity reduction and shortening the time necessary
Active Publication Date: 2008-08-12
KONICA MINOLTA BUSINESS TECH INC
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AI Technical Summary
Benefits of technology
This solution prevents productivity reduction by optimizing the edge holding time and force, maintaining even trimming across varying sheet quantities without increasing electricity consumption or apparatus size.
Problems solved by technology
In this case, although increase of power of the driving motor used for driving means can be considered to increase pressing force of edge holding member 903, it is not expedient because of an increase of electricity consumption, upsizing of the body and a raise in cost increase.
When the ratio of the gear reduction is large, the traveling speed of the edge holding member 903 is lowered and it causes a problem that it takes long to hold the sheets S, and therefore, the traveling time of edge holding member 903 may become longer than the process time of the upstream side of the post-processing apparatus or the process time of the image-forming apparatus, leading to the decline of productivity when the number of the sheets is small.
Method used
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[0034]An example of embodiment of a post-processing apparatus related to the invention will be explained as follows referring to drawings.
[0035]The post-processing apparatus of the embodiment of the invention is connected to an image-forming apparatus.
[0036]FIG. 1 shows a general diagram of the structure of an image-forming apparatus and a post-processing apparatus.
[0037]Symbol A indicates an image-forming apparatus, DF indicates an automatic document feeder, LT indicates a large-capacity paper feeder and B indicates a post-processing apparatus.
[0038]The image-forming apparatus A includes image-reading portion (image input device) 1, image-processing portion 2, image-writing portion 3, image-forming portion 4, paper-feed cassettes 5A, 5B, 5C, manual paper-feed tray 5D, first paper feeders 6A, 6B, 6C, 6D, 6E, registration roller 6F, fixing unit 7, paper discharge portion 8 and automatic duplex copy paper feeder (ADU) 8B.
[0039]Automatic document feeder DF is mounted on the upper part ...
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A post-processing apparatus which has a trimming apparatus for trimming an edge of sheets to make booklets, wherein the trimming apparatus has an inserting means for insertion of sheets into trimming process section of the trimming apparatus, an edge sustaining member and an edge holding member for pinching the vicinity of the edge of the sheet during the trimming process and a shifting means to make the opening size variable for receiving sheets by changing the relative position between the edge holding member and the edge sustaining member and a controller for controlling the shifting means to change the opening size between the edge holding member and the edge sustaining member according to the number of the sheets to be trimmed.
Description
BACKGROUND OF THE INVENTION[0001]The present invention relates to a post-processing apparatus which makes booklets by trimming an edge of sheets, and an image-forming apparatus equipped with the post-processing apparatus.[0002]There has been used in the printing industry, a post-processing apparatus equipped with a trimming apparatus for aligning an edge by trimming the edge of sheets of paper after some processes such as a center-folding process and a saddle-stitching process of the sheets.[0003]Lately, there has been provided a post-processing apparatus equipped with a trimming apparatus for aligning an edge by trimming the edge of sheets of paper, to which processes such as a center-folding process and a saddle-stitching process of the sheets have been carried out after receiving sheets on which images were formed by image-forming apparatuses such as a copying machine and a printer.[0004]Apparatuses described below are known as a trimming apparatus mentioned above.[0005]FIG. 11 s...
Claims
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IPC IPC(8): G03G15/00B41J11/70B26D1/08B26D5/16B26D7/02B26D7/06B42B4/00
CPCB26D1/08B26D5/16G03G15/6582B26D7/025G03G2215/00814Y10T83/9454
Inventor WAKABAYASHI, HIROYUKISHIDA, TOSHIOUCHIYAMA, MASAAKIHATTORI, MASATOKATO, NORISHIGEKAWATSU, KENJI
Owner KONICA MINOLTA BUSINESS TECH INC